Experimental study on Baotou steel's pellet with EP ash and pickling iron oxide scale
Aiming at the particularity of the Bayan Obo iron concentrate and the iron material structure of Baotou Steel's 624m2 belt roasting process,a stone oxide pellet with 2%EP ash and 2%pickling iron oxide scale was developed.The result show that:After adding 2%EP ash,the ratio of bentonite can be reduced by 0.5%.In order to ensure the compressive strength of pellets≥2 500 N,the roasting temperature needs to be increased by 20℃to 30℃;after adding 2%iron oxide scale,the green pellet performance is slightly reduced.Improvement,in order to ensure the compressive strength of pellets≥2 500 N,the roasting temperature needs to be increased by 50～60℃;with a small amount of pickled iron oxide scale or EP ash,its chemical composition and reducing performance can meet the blast furnace production requirements.
baiyun obo iron concentratepelletsteel making dustpickling iron oxide scale
万方数据
维普
